প্রশ্ন সংশোধন করুন
প্রশ্ন:
The mean of 50 observations was 36. It was found later that an observation 48 was worngly taken as 23. The correct new mean is :
The mean of 50 observations was 36. It was found later that an observation 48 was worngly taken as 23. The correct new mean is :